EP 0370266 B1 19911227 - USE OF SUBSTITUTED THIO UREAS IN THE SEPARATION OF COMPLEXED HEAVY METAL IONS
Title (en)
USE OF SUBSTITUTED THIO UREAS IN THE SEPARATION OF COMPLEXED HEAVY METAL IONS
Publication
Application
Priority
DE 3839222 A 19881119
Abstract (en)
[origin: US4980071A] Heavy metals can be precipitated from waste water or aqueous reaction solutions containing inorganic and/or organic complexing agents with substituted thiorureas of the general formula R1R2N-CS-NH-COR3. N,N-dialkyl-N'-benzoyl thioureas are used with preference, whereby methyl, ethyl, n-propyl or isobutyl groups are used as alkyl substituents.
IPC 1-7
IPC 8 full level
C02F 1/62 (2006.01); C02F 1/52 (2006.01); C22B 3/00 (2006.01); C22B 3/34 (2006.01)
CPC (source: EP US)
C02F 1/5272 (2013.01 - EP US); C22B 3/34 (2021.05 - EP US); Y02P 10/20 (2015.11 - EP US); Y10S 210/912 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0370266 A1 19900530; EP 0370266 B1 19911227; AT E70816 T1 19920115; DE 3839222 A1 19900523; DE 3839222 C2 19921022; DE 58900637 D1 19920206; ES 2027815 T3 19920616; GR 3004165 T3 19930331; JP H02174993 A 19900706; US 4980071 A 19901225
DOCDB simple family (application)
EP 89119972 A 19891027; AT 89119972 T 19891027; DE 3839222 A 19881119; DE 58900637 T 19891027; ES 89119972 T 19891027; GR 920400532 T 19920326; JP 29990989 A 19891120; US 43624989 A 19891114